Feature: 1. LED COLD LIGHT ILLUMINATION: The egg candler tester uses LED cold light source to provide even and soft lighting, without generating heat that could affect the eggshell. 2. ACCURATELY ASSESS: Egg candler tester allows users to clearly observe the development of the embryo inside the egg, including fertilization, embryo growth, and shell integrity, enabling timely detection of any issues. 3. PRESERVE EMBRYONIC HEALTH: By effectively avoiding damage to the embryo inside the egg, this device ensures the proper development of the embryo, safeguarding the future of the hatchling and maintaining the integrity of the breeding process. 4. ENERGY EFFICIENT: Featuring low energy consumption and a long lifespan, the LED cold light source is more energy efficient to traditional lighting, reducing operating costs and minimizing energy consumption and environmental impact. 5. PORTABLE AND CONVENIENT: The egg candler tester is made of lightweight plastic and does not come with batteries, making it easy to carry around and use anywhere. Great for farmers, breeders, and hatcheries looking to monitoring egg development with ease. Specification: Item Type: Egg Candler Tester Material: Plastic Battery Type: Dry Battery (Not Included) Battery Model: AAA x 3 Weight: Approx. 120.00g / 4.23oz Size: Approx. 120 x 30mm / 4.7 x 1.2in. Package List: 3 x Egg Candling Light 3 x Hanging Rope 3 x Focusing Head